Avatar (Fabio Alessandro Locati|Fale)'s blog

Why SMS should never be used as second factor

June 27, 2018

Lately, all website are urging their users to enable second-factors. The push for multi-factor logins is a good thing from my point of view, since the people are putting more and more details of their life online and is a good thing that companies start to understand the security implication of this and are trying to teach their users good security practices. The real problem is what is defined as second-factor. The possible factors are three:

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